Wrench



(No Model.)

F. KRUEGERMANN;

- WRENCH. No. 338,419.

UNITED STATES PATENT OFFICE.

FRIEDRICH KRUEGERMANN, OF SORANTON, PENNSYLVANIA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 338,419, dated March 23, 1886,

Application filed January 26, 1884. Serial No. 118,878.

To aZZ whom it may concern:

Be it known that I, FRIEDRIOH KRUEGER- MANN, a citizen of Prussia, Germany, who has declared his intention to become a citizen of the United States, residing at Scranton, Lackawanna county, in the State of Pennsylvania, have invented a new and useful W'rench, of which the following is a specification.

My invention relates to improvements in that class of wrenches in which one fixed jaw is employed in connection wit-h a laterally-sliding jaw connected to'the handle by a pivoted link, and the object of my invention is to produce awrench with which greater force can be exerted upon the nut than with those now known or in use; also to prevent its getting out of order when in use, and, furthermore, to facilitate its operation and application for use.

To this end my invention consists in the construction and arrangement of certain parts and details, as will be more fully described hereinafter, and more specifically pointed out in the claims, reference being had to the accompanying drawings and the letters of reference marked thereon.

Like letters indicate similar parts in the different figures of the drawings, in which Figure 1 represents a side elevation, partly in section, with the jaws closed on a nut. Fig. 2 is a side elevation showing the jaws partly opened to release the nut. Fig. 3 is an end or edge view of the wrench. Figs. 4 and 5 are detail views of the operating-link.

In the drawings, a represents the main or fixed jaw having the grooves a in its sides for the reception of the tongues b on the laterally-sliding jaw 12, moving at right angles to the vertical axis of the handle (1. The two sides are kept apart by a thimble, 7c, fitted over a rivet or screw, is. This is of prime importance in this connection, as the lateral walls of the rigid jaw are thus braced and prevented from being spread apart or forced together, either of which would render the device inoperative. Again, as will be understood from the foregoing, the sleeve k and bolt is will abut against the lug g or the sliding jaw and prevent the sliding (No model.)

jaws displacement should the bolt which connects the handle to the wrench be broken or lost out, as will be readily seen by reference to Fig. 1. The jaw b is provided with a lug, g, which is recessed at-one side, and has a hole for the reception of the nipple '5 on the link 0. This link is placed in the recess with one end, while its other end fits into a recess at the upper part or head, f, of the pivoted handle (I. This part f is also recessed, and receives the opposite end of the link 0, and its nipple 71. fits into a suitable hole in the recess. The handle is pivoted to thejaw a, as at e, by a screw or rivet, so that it can freely vibrate on it. It will be readily perceived that the link 0, having the nipples h and i, which fit into proper holes in the recessed parts of the jaw 12, and the head f of handle d form a very important feature of this invention.

The operation will be readily understood by those skilled in the art, as it will be seen that by moving the handle in one or the other direction the sliding jaw is moved backward and forward in the grooves of the fixed jaw by means of the link with its nipples.

I am aware that wrenches having a fixed and a sliding jaw operated by a link with holes, into which pins secured to the handle and jaw fit, and projecting into holes in the pivoted handle and sliding jaw, are broadly not new, and I therefore disclaim such, as the link is liable to split at the holes or become so jammed against the pins in said handle and jaw that the wrench becomes inoperative; and I am also aware of EnglishPatent No. 2,196 of 1862.

I am aware that it is old to construct sliding-jaw wrenches with a link which pivotally connects the sliding jaw with the handle of.

the wrench, and I therefore disclaim such construction. I am not aware, however, that a wrench of this character has been constructed with the walls braced and grooved as they are in mine, and

What I therefore desire to claim is I11 awrench, the fixed jaw having the rigid walls which inclose the sliding jaw, said walls provided with the T-shaped grooves and perforated to receive a pin on the end of the link,

in combination with a sliding jaw which has removable strengthening screw or bolt is, and correspondingly T-shaped tongues to fit into the thimble 7c, all constructed and combined [0 the T-shaped grooves in the walls of the rigid to operate substantially as set forth.

FRIEDRICH KRUEGERMANN.

Witnesses:

M. R. KOHNSTAMM, ANDREW RUF.

jaw, the links having the nipples cast integral 5 therewith and pivotally connecting the sliding jaw and handle together, the pivoted handle having therein a hole for the reception of a nipple on the link, and the supplemental 

